Home / 873,138,233.80-1,309,889,309.10-291,053,312.20

Finding the Fourth Proportional to 873,138,233.80, 1,309,889,309.10 and 291,053,312.20

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Solution

The fourth proportional to 873,138,233.80, 1,309,889,309.10 and 291,053,312.20 is: 436,640,622.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,138,233.80 : 1,309,889,309.10 = 291,053,312.20 : x
  2. Step 2: Convert to fraction form
    873,138,233.80/1,309,889,309.10 = 291,053,312.20/x
  3. Step 3: Cross multiply
    873,138,233.80x = 1,309,889,309.10 × 291,053,312.20
  4. Step 4: Simplify right side
    873,138,233.80x = 381,247,622,028,924,544
  5. Step 5: Solve for x
    x = 381,247,622,028,924,544/873,138,233.80
  6. Step 6: Final answer
    x = 436,640,622.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.